[patch 0/4] staging: speakup: refactor to make raw serial i/o swappable

[Okash Khawaja]

Hi,

The following patches group together most of raw serial comms with external
synth and makes rest of the code agnostic to it, so that raw serial comms
can be easily replaced by an alternate way to communicate with external
synths. Plan is to follow these patches with alternate implementation
of comms with external synths and then migrate existing synths to use the new
implementation.

Okash